Improvement in cooking-ranges



EDWARD MINGAY, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN COOKING-RANGES.

Specification forming part of Letters Patent No. 117,096, dated July 18,1871.

To all .whom t may concern:

Beit known that I, EDWARD MINGAY, of Boston, in the county of Suffolkand Commonwealth of Massachusetts, have made an invention of a new anduseful Improvement in Cooking-Ranges 5 and do hereby declare thefollowing to be a full, clear, and exact description thereof, duereference being had to the accompanying drawing making part of thisspecification, and in which- Figure l is a horizontal, and Fig. 2 avertical section of a portion of a cookingfrange containing myimprovement. Fig. 3 is a plan view of the range from underneath,showing' the bottom plate of the air-heating chamber, hereinafterreferred to.

The object I have had in View in originating my present invention hasbeen to rarefy a small quantity of pure air and conduct the same to theoven of the stove or range, in order to reduce the temperature of thetop of the stove and protect it from injury, as well as t0 convey acertain additional amount of heat to the interior 0f the oven, and toventilate the same.

The accompanyin g drawing represents at A the elevated ovens, and at Bthe top plate of a cooking-range. The top plate B is, in part, hollow,as shown at C, while the rear wall of the oven is formed with verticalues or passages D D communicating with the interior or heat-receivingchamber C and the interior of each oven. Two or more air-inlet orifices,al a, are formed in the upper plate of the chamber or air-heatin g spaceC, in order that air from the apartment may enter thereat by the actionof the draught induced through such chamber by the rarefication oftheair within it, the air thus heated passing, by natural laws, to theinterior of each oven through the iiues D D.

The employment of the double top plate B and the automatic circulationof fresh air through it en route to the ovens are productive of verygood results, inasmuch as they, as before premised, not only reduce thetemperature of the top plate and retain it intact from serious injury,but both ventilate and aid in heating the interior of the oven or ovens.

l claim- As an improvement in cooking-stoves or ranges, &c.,the adoptionof a hollow, double, or tubular top plate having air-inlet orificesleading to the interior thereofl and outlet-passages for the air passingthrough it to enter the oven, for purposes herein stated.

EDWARD MINGAY.

Witnesses FRED. CURTIS, EDw. GRIFFITH.

